.container {
    height: 100%;
    display: flex;

    .left,
    .right {
        width: 50%;
        height: 100%;
    }

    .left {
        position: relative;
    }

    .right {
        background-color: rgba(64, 158, 255, .2);
        position: relative;
        box-sizing: content-box;
    }

    .flex-center{
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }
}